/**
 * GET    /api/workspaces/[slug]/databases/[uuid] — database details (incl. URLs)
 * PATCH  /api/workspaces/[slug]/databases/[uuid] — update fields
 * DELETE /api/workspaces/[slug]/databases/[uuid]?confirm=<name>
 *        Volumes KEPT by default (data). Pass &delete_volumes=true to drop.
 */

import { NextResponse } from 'next/server';
import { requireWorkspacePrincipal } from '@/lib/auth/workspace-auth';
import {
  getDatabaseInProject,
  updateDatabase,
  deleteDatabase,
  projectUuidOf,
  TenantError,
} from '@/lib/coolify';

export async function GET(
  request: Request,
  { params }: { params: Promise<{ slug: string; uuid: string }> }
) {
  const { slug, uuid } = await params;
  const principal = await requireWorkspacePrincipal(request, { targetSlug: slug });
  if (principal instanceof NextResponse) return principal;

  const ws = principal.workspace;
  if (!ws.coolify_project_uuid) {
    return NextResponse.json({ error: 'Workspace has no Coolify project yet' }, { status: 503 });
  }

  try {
    const db = await getDatabaseInProject(uuid, ws.coolify_project_uuid);
    return NextResponse.json({
      uuid: db.uuid,
      name: db.name,
      type: db.type ?? null,
      status: db.status,
      isPublic: db.is_public ?? false,
      publicPort: db.public_port ?? null,
      internalUrl: db.internal_db_url ?? null,
      externalUrl: db.external_db_url ?? null,
      projectUuid: projectUuidOf(db),
    });
  } catch (err) {
    if (err instanceof TenantError) return NextResponse.json({ error: err.message }, { status: 403 });
    return NextResponse.json({ error: 'Database not found' }, { status: 404 });
  }
}

export async function PATCH(
  request: Request,
  { params }: { params: Promise<{ slug: string; uuid: string }> }
) {
  const { slug, uuid } = await params;
  const principal = await requireWorkspacePrincipal(request, { targetSlug: slug });
  if (principal instanceof NextResponse) return principal;

  const ws = principal.workspace;
  if (!ws.coolify_project_uuid) {
    return NextResponse.json({ error: 'Workspace has no Coolify project yet' }, { status: 503 });
  }

  try {
    await getDatabaseInProject(uuid, ws.coolify_project_uuid);
  } catch (err) {
    if (err instanceof TenantError) return NextResponse.json({ error: err.message }, { status: 403 });
    return NextResponse.json({ error: 'Database not found' }, { status: 404 });
  }

  let body: Record<string, unknown> = {};
  try {
    body = await request.json();
  } catch {
    return NextResponse.json({ error: 'Invalid JSON body' }, { status: 400 });
  }

  const allowed = new Set([
    'name',
    'description',
    'is_public',
    'public_port',
    'image',
    'limits_memory',
    'limits_cpus',
  ]);
  const patch: Record<string, unknown> = {};
  for (const [k, v] of Object.entries(body)) {
    if (allowed.has(k) && v !== undefined) patch[k] = v;
  }
  if (Object.keys(patch).length === 0) {
    return NextResponse.json({ error: 'No updatable fields in body' }, { status: 400 });
  }

  try {
    await updateDatabase(uuid, patch);
    return NextResponse.json({ ok: true, uuid });
  } catch (err) {
    return NextResponse.json(
      { error: 'Coolify update failed', details: err instanceof Error ? err.message : String(err) },
      { status: 502 }
    );
  }
}

export async function DELETE(
  request: Request,
  { params }: { params: Promise<{ slug: string; uuid: string }> }
) {
  const { slug, uuid } = await params;
  const principal = await requireWorkspacePrincipal(request, { targetSlug: slug });
  if (principal instanceof NextResponse) return principal;

  const ws = principal.workspace;
  if (!ws.coolify_project_uuid) {
    return NextResponse.json({ error: 'Workspace has no Coolify project yet' }, { status: 503 });
  }

  let db;
  try {
    db = await getDatabaseInProject(uuid, ws.coolify_project_uuid);
  } catch (err) {
    if (err instanceof TenantError) return NextResponse.json({ error: err.message }, { status: 403 });
    return NextResponse.json({ error: 'Database not found' }, { status: 404 });
  }

  const url = new URL(request.url);
  const confirm = url.searchParams.get('confirm');
  if (confirm !== db.name) {
    return NextResponse.json(
      { error: 'Confirmation required', hint: `Pass ?confirm=${db.name}` },
      { status: 409 }
    );
  }

  // Default: preserve volumes (it's a database — user data lives there).
  const deleteVolumes = url.searchParams.get('delete_volumes') === 'true';
  const deleteConfigurations = url.searchParams.get('delete_configurations') !== 'false';
  const deleteConnectedNetworks = url.searchParams.get('delete_connected_networks') !== 'false';
  const dockerCleanup = url.searchParams.get('docker_cleanup') !== 'false';

  try {
    await deleteDatabase(uuid, {
      deleteConfigurations,
      deleteVolumes,
      deleteConnectedNetworks,
      dockerCleanup,
    });
    return NextResponse.json({
      ok: true,
      deleted: { uuid, name: db.name, volumesKept: !deleteVolumes },
    });
  } catch (err) {
    return NextResponse.json(
      { error: 'Coolify delete failed', details: err instanceof Error ? err.message : String(err) },
      { status: 502 }
    );
  }
}